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Parts Per Billion (ppb)

Parts Per Billion (ppb) is a measurement term used to describe the number/ concentration of particular gas, liquid, or solid mixture. Ppb is one part of a chemical found in one billion (1,000,000,000) parts.


Measured

  • Measured in water or gas: one microgram per litre (ug/l)
  • Measured in solid material: microgram per kilogram of for example soil (ug/kg)

Related Terms

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